氢化物-原子荧光法测定水处理剂氯化铁中砷

饮用水净化处理过程中广泛使用聚合氯化铝作为絮凝剂,但研究表明早老性痴呆可能与饮水中的铝有关。故而,氯化铁作为水处理的絮凝剂又重新受到重视。氯化铁中砷的含量是衡量水处理剂卫生状况的重要指标之一。本文采用氢化物-原子荧光法测定水处理剂氯化铁中砷。实验结果表明,在标准曲线0.0～20.0μg/L内线性关系良好,相关系数r为0.9997,最低检出限为0.10μg/L,相对标准偏差为3.1%～5.7%,精密度较好,加标回收率为95.9%～104.8%,准确度、灵敏度较高,样品测定结果与国家标准方法测定结果相符,对自来水厂使用符合国家标准的水处理剂具有指导意义,是一种值得推广的好方法。

Determ Ination of Arsenic in Water Treatment Reagent-ferric Chloride by Hg-afs

Drinking water purification treatment process widely used as flocculant polyaluminium chloride,but research shows that Alzheimer’s disease may be associated with aluminum in drinking water.Therefore,the ferric chloride as flocculants for water treatment and renewed attention.Ferric chloride content of arsenic in water treatment agent health status measure is one of the important indexes.In this paper,using hydride generation atomic fluorescence spectrometry determination of arsenic in water treatment agent ferric chloride.The experimental results show that,in the standard curve of 0～20 g/L good linear relationship,the correlation coefficient r was 0.9997,the minimum detectable limit of 0.10 g/L,the relative standard deviation is 3.1%～5.7%,the precision is good,and the recovery rate was 95.9%～104.8%,accuracy,high sensitivity,sample determination results with the national standard method of determination results,on the water plant used in line with national standards of water treatment agent with guidance,is a kind of good method.